OK Guys and Gals

Bit of help please

My lovely new HTC desire came this morning

Can I get it to connect vis blue tooth to the hands free built into my 06 Mondeo - No

I'm totally confused, made it discoverable, searched for devices and nothing shows up. My old Nokia finds it the stereo no problem. I don't suppose anyone else has had similar problems connecting one to a ford ? And more importantly fixed it ?